JSONObject field = JSONObject.parseObject(fieldStr,Feature.OrderedField);
Map<String,String> map = new LinkedHashMap<String, String>(); 使用linkedHashMap 顺便不变
JSONObject field = JSONObject.parseObject(fieldStr,Feature.OrderedField);
Map<String,String> map = new LinkedHashMap<String, String>(); 使用linkedHashMap 顺便不变